Inventory Turnover

Date created: Oct 12, 2022  •   Last updated: Sep 14, 2023

What is Inventory Turnover

Inventory Turnover measures how often, in a given time-period, your organization is able to sell its entire inventory. Inventory Turnover is an important efficiency metric and is helpful in analyzing pricing, product demand, and, of course, inventory purchase and costs. It is also a critical tool when selling perishable goods, where the potential for waste is high.

Inventory Turnover Formula

ƒ Sum(COGS) / ((Beginning Inventory Value + Ending Inventory Value) / 2)

How to calculate Inventory Turnover

If a clothing retailer generates $1M in sales each month, with $400K in Costs of Goods Sold (COGS), and the start of the month inventory was valued at $45K and closed at $55K; Using the Sales method, Inventory Turnover = $1M / (( $45K + $55K ) / 2 ) = 20X per month Using the COGS method, Inventory Turnover = $400 / (( $45K + $55K ) / 2 ) = 8X per month

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How to visualize Inventory Turnover?

Use a summary chart to visualize your Inventory Turnover data and compare it to a previous time period.

Inventory Turnover visualization example

Inventory Turnover


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vs previous period

Summary Chart

Here's an example of how to visualize your current Inventory Turnover data in comparison to a previous time period or date range.
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Inventory Turnover


Measuring Inventory Turnover

More about Inventory Turnover

There are two types of calculations you can use: The Sales method and the Cost of Goods Sold (COGS)method. Using the COGS method produces a more accurate result because markup is not factored in.

Average Inventory value is calculated by adding the starting and ending inventory together and dividing by two.

Inventory turnover is an important indicator of the efficiency of your supply chain, the quality and demand of the inventory you carry, and if you have good buying practices. Generally speaking, a higher Inventory Turnover rate is better, while a lower Inventory Turnover rate suggests inefficiency and difficulty turning stock into revenue. Each type of industry will have different benchmarks and norms. For instance, a fresh produce supplier will have many more turns than a heavy equipment manufacturer.

Recommended resources related to Inventory Turnover

An in-depth article on Inventory Turnover by Marshall Hargrave

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